Revert "Prebuilt chromium: Run a check for target device directory"

This reverts commit ce06d4cec2a9f5cb9a796f2c1bd705b87db0b6ff.
Revert "build: Add chromium prebuilt support to envsetup.sh && The core Makefile"

This reverts commit 99242ccdd1f77f3734bb45a0adb82471681d0930.
Remove webviewchromium from bootclasspath

This caused errors when booting, causing the telephony-msim to not
load, ultimately causing FC's.

As we aren't going to compile chromium_org, we will remove this,
for now.

Change-Id: I689298cb8e70ec85ebeb33a907cd00671bd57fc5
remove auditd from compiling.

this causes logcat spam, me hate.

Change-Id: I1eb1b39cddee058ac0fcbe4687f8c3c7726cc7d8